Choosing the cheapest bedbug quote
A single cheap spray visit scatters bedbugs into adjacent rooms and leaves the eggs alive, so the infestation returns larger and now costs more to end. Compare quotes on what they include: follow-up visits, heat availability and warranty terms, not the headline number.
Asking for a stronger mix
Customers regularly pressure technicians to double the concentration for a more powerful result. Over-concentration adds risk to your household without improving the outcome, because dosing is set by the label, not by smell. If a technician agrees to it readily, that tells you something about the company.
Treating one flat in an infested building
Cockroaches and bedbugs move between units through chutes, risers and shared walls. If neighbouring flats or the garbage room are infested, a single-unit treatment buys weeks, not a solution. Raise it with building management so common areas and adjacent units are treated in the same window.